CVE-2018-1111

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DHCP packages in Red Hat Enterprise Linux 6 and 7, Fedora 28, and earlier are vulnerable to a command injection flaw in the NetworkManager integration script included in the DHCP client. A malicious DHCP server, or an attacker on the local network able to spoof DHCP responses, could use this flaw to execute arbitrary commands with root privileges on systems using NetworkManager and configured to obtain network configuration using the DHCP protocol.

CVSS 7.5 (HIGH)

Attention and evidence

HYPE SCORE

0.0/10

REALITY · THREAT PRIORITY

5.5/10

General review priority; not probability

Evidence confidence: PoC published; attacks unconfirmed

Why this priority?

Technical severity: CVSS 7.5: +2.62
Fresh EPSS: 97.86%: +2.45
Published PoC; attacks unconfirmed: +0.40

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 2 documents and public datasets.

Hype components

Headline sample (25%)

0/100

Press, 30 days (60%)

0/100

Grounded branding (15%)

0/100

HYPE TOTAL0/100

Sources and documents

Unit 42

Press · 16 Jul 2018, 07:00 · Analysis of the DHCP Client Script Code Execution Vulnerability (CVE-2018-1111) - Unit 42

Information Security Newspaper

Press · 17 May 2018, 07:00 · Red Hat Linux affected by critical vulnerability - Information Security Newspaper

Score evolution

● Hype ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 5.5 (2026-11-02 15:12). The curve appears once the score changes.

Public exploit evidence

Public exploit entries / repo candidates

Source entries and unverified repository candidates are counted separately.

Public exploit evidence

exploitdb #44652 2018-05-18
exploitdb #44890 2018-06-13

Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence: PoC published; attacks unconfirmed
Priority basis: Exploitation in attacks unconfirmed; CVSS 7.5; EPSS 97.9%
Attention, last 30 days: 0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential: adjacent access, no prior privileges, no user interaction, additional attack conditions.
Observed activity: Public PoC evidence is present.
Known scale: Not quantified.
Evidence confidence basis: Published PoC artifact; functionality unverified

Score evaluated: 2026-11-05 13:57:55.555769+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline

First press mention

17 May 2018, 07:00

Published

17 May 2018, 16:00

Latest press mention

16 Jul 2018, 07:00

Score calculated

05 Nov 2026, 13:57

PoCs on GitHub

2 repositories